Web pages now have more control over 'autoStart' and 'debug' settings

modules/c1pjs/lib/nodebugger.js

@@ -40,8 +40,8 @@
  * debugger.js from the compilation process altogether.
  *
  * However, when we're in "development mode" and running uncompiled code in debugger-less configurations,
- * I would like to skip loading debugger.js altogether.  To do that, we must arrange for this additional file
- * (nodebugger.js) to be loaded as early as possible, which *explicitly* overrides the previously defined value
+ * I would like to skip loading debugger.js altogether.  To do that, we must arrange for this additional file,
+ * nodebugger.js, to be loaded immediately after defines.js, *explicitly* overriding the previously defined value
  * of DEBUGGER with *false*.
  */
-var DEBUGGER = false;
+DEBUGGER = false;

modules/pcjs/lib/cpu.js

@@ -49,9 +49,9 @@ if (NODE) {
  *
  *      multiplier: base cycle multiplier; default is 1.
  *
- *      autoStart: true to automatically start, false to not (default); however,
- *      in the latter case, we make the final autoStart decision based on whether
- *      or not a Debugger is installed and/or a "Run" button is present.
+ *      autoStart: true to automatically start, false to not, or null if "it depends";
+ *      null is the default, which means do not autostart UNLESS there is no Debugger
+ *      and no "Run" button (ie, no way to manually start the machine).
  *
  *      csStart: the number of cycles that runCPU() must wait before generating
  *      checksum records; -1 if disabled. checksum records are a diagnostic aid
@@ -200,7 +200,7 @@ CPU.prototype.initBus = function(cmp, bus, cpu, dbg)
      * We've already saved the parmsCPU 'autoStart' setting, but there may be a machine (or URL) override.
      */
     var sAutoStart = cmp.getMachineParm('autoStart');
-    if (sAutoStart !== undefined) {
+    if (sAutoStart != null) {
         this.flags.fAutoStart = (sAutoStart == "true"? true : (sAutoStart  == "false"? false : !!sAutoStart));
     }
 

modules/pcjs/lib/defines.js

@@ -93,7 +93,7 @@ var TYPEDARRAYS = (typeof ArrayBuffer !== 'undefined');
  * TODO: BACKTRACK support is currently completely disabled until we have a chance to investigate the problem
  * discussed in Bus.addBackTrackObject().
  */
-var BACKTRACK = !COMPILED && DEBUG;
+var BACKTRACK = !COMPILED && DEBUGGER;
 
 /**
  * @define {boolean}

modules/pcjs/lib/nodebugger.js

@@ -41,6 +41,11 @@
  *
  * However, when we're in "development mode" and running uncompiled code in debugger-less configurations,
  * I would still like to skip loading debugger.js altogether.  To do that, we must arrange for this additional file,
- * nodebugger.js, to be loaded as early as possible, which explicitly UPDATES the value of DEBUGGER to false.
+ * nodebugger.js, to be loaded immediately after defines.js, *explicitly* overriding the previously defined value
+ * of DEBUGGER with *false*.
+ *
+ * Additionally, we must update any globals that depend on DEBUGGER (currently, BACKTRACK and SYMBOLS).
  */
-var DEBUGGER = false;
+DEBUGGER = false;
+BACKTRACK = !COMPILED && DEBUGGER;
+SYMBOLS = DEBUGGER;

modules/pcjs/templates/components.xsl

@@ -565,7 +565,7 @@
 			<xsl:choose>
 				<xsl:when test="@autostart"><xsl:value-of select="@autostart"/></xsl:when>
 				<xsl:when test="@autoStart"><xsl:value-of select="@autoStart"/></xsl:when>
-				<xsl:otherwise>false</xsl:otherwise>
+				<xsl:otherwise>null</xsl:otherwise>
 			</xsl:choose>
 		</xsl:variable>
 		<xsl:variable name="csStart">